Nonlinear analysis

All structural problems are to some degree nonlinear. Whenever loads, material properties, contact conditions, or structural stiffness are a function of displacement, the problem is nonlinear. If large displacements or rotations are present, the linear strain-displacement relations assumed in linear analysis may be inadequate.

Nonlinear analysis considers geometric and material nonlinear behavior. In a nonlinear dynamics analysis, for example, the software calculates dynamic responses with nonlinear effects. Compared to a linear analysis, a nonlinear analysis requires significantly greater computer time and disk storage. As the same element library is offered for both linear and nonlinear analyses, you can easily convert an existing linear model to a nonlinear model.

Example results from a nonlinear dynamic analysis of a phone drop

Supported analysis types

Pre/Post supports the following nonlinear analysis types:

• Simcenter NastranSOL 106 Nonlinear StaticsSOL 129 Nonlinear Transient ResponseSOL 401 Multi-Step Nonlinear StaticsSOL 402 Multi-Step Nonlinear KinematicsSOL 601,106 Advanced Nonlinear StaticsSOL 601,129 Advanced Nonlinear TransientSOL 701 Explicit Advanced Nonlinear Analysis

• ANSYS - Nonlinear Statics

• AbaqusGeneral step (NLGEOM must be selected) ViscoDirect Cyclic Implicit Dynamic Dynamic Explicit Analysis

• Simcenter Samcef - Nonlinear Static Analysis

Learn more

Linear static analysis

Linear Buckling analysis

Modal analysis

Thermal and Thermal-Structural analysis

Aeroelastic analysis

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

Browse Simcenter 3D help by product area

Nonlinear analysis, Simcenter 3D 2021.1 Series

© 2020 Siemens

window.mainLanguage="en_US"

window.delivId=""

window.projectId=""

MathJax.Hub.Config({ TeX: { extensions: ["autoload-all.js"] }, tex2jax: { displayMath: [ ] }, "SVG": { scale: 125 } });